1d5z

X-ray diffraction
2Å resolution

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-216678 (preferred)
Entry contents:
4 distinct polypeptide molecules
Macromolecules (4 distinct):
HLA class II histocompatibility antigen, DR alpha chain Chain: A
Molecule details ›
Chain: A
Length: 181 amino acids
Theoretical weight: 21.08 KDa
Source organism: Homo sapiens
Expression system: Drosophila melanogaster
UniProt:
  • Canonical: P01903 (Residues: 26-206; Coverage: 79%)
Gene names: HLA-DRA, HLA-DRA1
Sequence domains:
Structure domains:
HLA class II histocompatibility antigen, DRB1 beta chain Chain: B
Molecule details ›
Chain: B
Length: 192 amino acids
Theoretical weight: 22.52 KDa
Source organism: Homo sapiens
Expression system: Drosophila melanogaster
UniProt:
  • Canonical: P01911 (Residues: 30-221; Coverage: 81%)
Gene name: HLA-DRB1
Sequence domains:
Structure domains:
Enterotoxin type B Chain: C
Molecule details ›
Chain: C
Length: 239 amino acids
Theoretical weight: 28.41 KDa
Source organism: Staphylococcus aureus
UniProt:
  • Canonical: P01552 (Residues: 28-266; Coverage: 100%)
Gene name: entB
Sequence domains:
Structure domains:
PROTEIN (PEPTIDOMIMETIC INHIBITOR) Chain: D
Molecule details ›
Chain: D
Length: 8 amino acids
Theoretical weight: 847 Da

Ligands and Environments

No bound ligands
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X4A
Spacegroup: P212121
Unit cell:
a: 78.343Å b: 100.168Å c: 100.175Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.234 0.234 0.265
Expression system: Drosophila melanogaster